urgent system suddenly boot failed due to ZFS:i/o error on FreeBSD 8.2

[Simon]

I'd boot using liveCD to see what's going on with the zpool, drive detection, and
what the other person suggested as far as possible hot-spare issue.

-Simon

On Wed, 2 May 2012 20:03:19 +0800, suken woo wrote:

>hi,lists
>  for some reasons I need restart system but it suddenly boot failed today.
>here is the error:
>ZFS: i/o error - all block copies unavailable
>ZFS: can't read object set for dataset 16
>Can't find root filesystem - giving up
>ZFS:unexcepted object set type 0
>ZFS:unexcepted object set type 0

>FreeBSD/i386 boot
>Default: zroot:/boot/kernel/kernel
>boot:
>ZFS:unexcepted object set type0

>FreeBSD/i386 boot
>Default: zroot:/boot/kernel/kernel
>boot: _

>any ideas to resolved it?
>thanks in advance
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